BIOL 1407
Plant Functions Assignment
Go here: http://www.bscb.org/?url=softcell/vacuole
Read the article.
1.
What do plants do with their waste products?
2.
Describe the function of the tonoplast.
3.
Describe the role of the vacuole in water balance.
4.
Comparison of Functions of Non-Vascular and Vascular Plants
Fill in the table. (Your textbook will give you additional information.)
Non-Vascular Plants
Vascular Plants
Guard cells control rate of
transpiration and gas
exchange?
Roots play primary role in
water absorption?
Roots play primary role in
mineral absorption?
Long-distance transport
necessary?
Mode of nutrition?
Waste disposal method?
Review of Guard Cells and Stomata
5.
Describe the mechanisms used by guard cells to open and close stomata.
6.
When guard cells take up the ion _____________, water enters the guard cells.
As a consequence, the stoma ____________________.
BIOL 1407
7.
The exit of the ion _____________ from the guard cells results in water also
leaving the guard cells. As a consequence, the stoma ____________________.
8.
Why does the average plant have more stomata on the undersides of its leaves
than on the top?
Further Explorations
Water Balance in Mangroves
Go here:
https://www.epa.qld.gov.au/nature_conservation/habitats/wetlands/wetlands_habitats/mangroves/
Read the article.
1.
2.
3.
Describe mechanisms used by mangroves to cope with excess salt.
Describe mechanisms used by mangroves to control water loss.
Explain why mangroves grow in salty environments.
Epiphytes, Parasites and Carnivorous Plants
(Read the material in your textbook. Page 798, 8th ed or page 768, 7th edition)
1.
2.
Discuss differences between epiphytes, parasitic plants and carnivorous plants.
Fill in the Table
Characteristic
Epiphyte
Parasitic Plant
Grow on other plants?
(Yes or No)
Source of Water?
(Atmosphere or Host
Plant through Haustoria)
Source of Minerals?
(Atmosphere or Host
Plant through Haustoria)
Source of Sugars?
(Photosynthesis or
Host Plant)
Examples
3.
4.
What structure is usually used by an epiphyte to absorb water and minerals?
Do all parasitic plants steal sugars from host plants? Explain your answer.
Go here:
Go here:
http://www.youtube.com/watch?v=ktIGVtKdgwo
http://www.youtube.com/watch?v=trWzDlRvv1M
BIOL 1407
(Or Google "carnivorous plants Attenborough" and watch Venus Fly Traps and
Poisonous Pitcher Plant)
5.
6.
7.
8.
Explain how venus fly traps work.
Explain how pitcher plants work.
Discuss why carnivorous plants eat insects? What does this have to do with
where these plants normally live?
Describe the adaptations of the pitcher plants for catching and preventing
the escape of their prey.
Xerophytes
Go here:
http://www.youtube.com/watch?v=A6L3korqXb4
Go here:
http://www.youtube.com/watch?v=z1IBnHIOFxs
(Or Google "Attenborough desert plants" and watch the quiver tree video and plant
growth of tropical flowers in desert (really desert wildflowers!))
1.
2.
Discuss the adaptations of the quiver tree that allow them to survive in the Namib
desert.
Discuss the adaptations of desert wildflowers that allow them to survive in the
desert.